Vibration-arrester.



W. F. NICHOLS.

VIBRATION ARRESTER.

APPLICATION rum) 001225, 1907.

Patented Feb. 22, 1910.

WILLIAM F. NICHOLS, OF CHICAGO, ILLINOIS.

VIBRATION-ARRESTER.

Specification of Letters Patent.

Patented Feb. 22, 1910.

Application filed October 25, 1907. Serial No. 399,091.

To all whom it may concern:

Be it known that I, W LLIAM F. NICHOLS, a citizen of the United Statesof America, and resident of Chicago, Cook county, Illinois, haveinvented a certain new and useful Improvement in Vibration-Arresters, ofwhich the following is a specification.

My invention relates to improvements in anti-vibrators, and has for itsobject the production of a device by means of which the vibrations of agas lamp or other like structure are taken care of, thereby preventingthe breakage of the globes.

A further object is the production of a device that can be readilyattached to ordinary globes and arms without changing the existingconditions.

A further object is the production of a cheap and economical device, andone that is not liable to become disarranged.

These and such other objects as may hereinafter appear are attained bymy device, an embodiment of which is illustrated in the accompanyingdrawing, in which- Figure 1 represents a perspective view of a gas lampin place on a post equipped with my device. Fig. 2 is an enlargedsectional view through the center of my device, with parts shown inelevation. Fig. 3 is a top plan view of the device shown in Fig. 2.

Like numerals of reference indicate like parts in the several figures ofthe drawings.

Referring now to the drawing& represents an ordinary gas lamp postterminating in a goose-neck 5 to the end of which is secured my device6, securing a globe and hood 7 to the goose-neck.

Referring now to Fig. 2,8 represents an ordinary reducer attached to thebottom of the goose-neck within which is screwed a combined springsupport and stuffing box 9. A. tube 10 extends through the stuffing boxand terminates in an annular shoulder 11 formed by screwing a ring ontop of the tube. A screw collar 12 surrounds the tube 10, terminating inan annular seat 13 adapted to screw into the stufling box and againstthe packing 14. Soldered to the lower end of the tube 10 is a flexiblemetallic tube 15 terminating in a screw portion 16 adapted to screw intothe interiorly threaded base' 17. A gas pipe 18 connects the base 17with the lamp proper. The base is provided with a plurality ofdownwardly extending open ings or channels 19 to prevent theaccumulation of moisture within the base. The upper spring support 9 isprovided with exterior threads within which the coil spring 20 isadapted to screw, and the upper portion of the base 17 is also similarlythreaded and adapted to receive the lower end of the spring 20. Thespring is located in place in the base and spring support in any wellknown manner.

It has been found, in practice, that the securing of gas lamp globes,especially those for use in exposed positions, results in a largebreakage due to the vibration caused by trafiic, wind, etc. This isnecessarily the case when the connection between the globe and thesupport is rigid. By the use of my device, however, in which a flexiblemetal tube is used in connection with a coiled spring, the vibrationscaused by wind or other agents are taken up, as it were, by the springand the tube, and not directly trans mitted to the globe itself. Theweight of the globe, hood, etc., is not brought directly on the flexibletube, but a great portion of the strain is taken care of by the coiledspring. The end of the tube 10 projects upwardly through the stuffingbox, and considerable play is left between the seat 13 and the shoulder11, allowing sufficient longitudinal movement incident to the weight ofthe device. The base is also provided with a discharging means, therebypreventing any accumulation of dirt or moisture therein, with aconsequent rusting of the connection between it and the tube.

Another important feature in my invention is the fact that this devicecan be used regardless of the weight of the lamp structure. In the eventthat the lamp is moved, the tube 10 is pulled downwardly within thestuffing box. Any undue pull is, of course, resisted by the spring, andat the same time the shoulder 11 serves as a stop when the limit of thedevice is reached. If the spring is of insufficient stiffness orstrength, the shoulder 11 prevents the lamp from becoming detached,while at the same time there is considerable play in the reducer tocompensate for the different weights of the globe, lamp, etc.

I claim:

As a new article of manufacture, a combined support and stuffing box, abase, a

coiled spring removably secured to the said members, a flexible tubeconnection extendtherefrom. 1O ing therebetween, and means forpermitting Signed by me at Chicago, Illinois, this the endWise movementof said connection, 21st day of October, 1907.

openings permitting the escape of material 5 comprising a tubularextension adapted to WVILLIAM F. NLGHOLS.

slide Within said stufling box, together with lVitnesses:

a shoulder for limiting the movement of said SARAH LEWIS, extension,sald base being provided with 1 F. H. DRURY.

